opencv 2.2.0 surfFeaturedetecor

Question

I am using open cv version 2.2.0 with visual studio 2008, i was doing some image processing tried many things but i got stucked doing SURF matching.... given some errors here..

Error 2 error LNK2019: unresolved external symbol "public: __thiscall cv::SurfFeatureDetector::SurfFeatureDetector(double,int,int)" (??0SurfFeatureDetector@cv@@QAE@NHH@Z) referenced in function _main test1.obj cvtest2008

Error 3 error LNK2019: unresolved external symbol "public: virtual __thiscall cv::FeatureDetector::~FeatureDetector(void)" (??1FeatureDetector@cv@@UAE@XZ) referenced in function "public: virtual __thiscall cv::SurfFeatureDetector::~SurfFeatureDetector(void)" (??1SurfFeatureDetector@cv@@UAE@XZ) test1.obj cvtest2008

Error 4 fatal error LNK1120: 2 unresolved externals C:\Documents and Settings\User.MYPC\Desktop\cvtest2008\Debug\cvtest2008.exe cvtest2008

here is my simple code...

#include <iostream>
#include <vector>
#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/features2d/features2d.hpp>


int main() {

    // Read input images
    cv::Mat image1= cv::imread("i1.jpg",0);
    cv::Mat image2= cv::imread("i2.jpg",0);
    if (!image1.data || !image2.data)
        return 0; 

    // Display the images
    cv::namedWindow("Right Image");
    cv::imshow("Right Image",image1);
    cv::namedWindow("Left Image");
    cv::imshow("Left Image",image2);

    // vector of keypoints
    std::vector<cv::KeyPoint> keypoints1;
    std::vector<cv::KeyPoint> keypoints2;

    // Construction of the SURF feature detector 
    cv::SurfFeatureDetector surf(3000);


    cv::waitKey();

    return 0;
}

please help

KobeJohn KobeJohn · Accepted Answer · 2012-06-21T10:50:17

I'm no c++ programmer, but it looks like your linker doesn't know where your opencv libraries are. For 2.2, I believe they are here:

...\OpenCV2.2\lib

In this SO question of mine, a lot of it doesn't apply, but the linking and libraries section is probably what you need. Ignore my original question of course and skip to either of the answers.

opencv 2.2.0 surfFeaturedetecor

1 Answers